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Hello, my friends and I are doing a presentation on rocks. and are trying to beat our sisters in the best presentation. This is what we have so far. Is there anything we are missing that would make this better?
Igneous is kind of like lava and magma, so there are two types of igneous rocks: intrusive igneous rocks and extrusive igneous rocks 🔥🌋. Igneous rocks form when molten magma or lava cools and solidifies. They are classified as intrusive (cools underground) or extrusive (cools on the surface). Intrusive rocks have coarse crystals, while extrusive rocks have fine or no crystals. Common igneous rocks include basalt and obsidian. granite, and They are hard and durable and do not contain fossils.
Sedimentary rocks are made of plants, minerals, and rocks. Over time they have been compressed & deposited. They can be found in ocean & lake beds and the earth's crust. Sandstone, limestone, shale, and conglomerate are all examples of sedimentary rocks. And in the next slide we will talk about more interesting facts about sedimentary rocks.
Metamorphic rocks are made when two rocks combine under intense heat and create one rock; this takes about 1,000 years. This does not destroy the rocks but makes them denser and stronger. Slate and marble are examples of metamorphic rocks.